Steven Bauer was 23 in She's in the Army Now when he played the character 'Nick Donato'.
That was over 43 years ago in 1981.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 67, and has starred in 98 movies in total, 97 of those since She's in the Army Now was released.
In She's in the Army Now, I think Steven Bauer looks: